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@1612 totes gaunt ffire.

IMPROVED COMPOSITION ROOFING.

fitlgt fit gtimlc reform in in floss Enters $312M TO ALL WHOM IT MAY CONCERN: Be it known that I, JOHN P. Oowmo, of Seneca Falls, Seneca county, State of New York, have invented a I new and useful Compound for Plastic Roofing; and I do hereby declare that the following is a full and exact description thereof. 1 p

The nature of my invention consists of coal tar and ground fire-clax cl 'by mixing the sai'ne,-thick or thin as desired, and applied with a trowel orbrush to boards, or tin, or felt, paper, cloth, or othcr substances.

Letter-A is the fire-clay rock; and letter B is ground fire-clay and coal tar mixed; letter C is the compound applied on wood, and dried. The advantage of my compound is that it is softer than the common slate compound, patented February 21, 1865, 'which article I disclaim, as too hard and more liable to crack and cleave, and does not amalgamate, and work as smooth as the fire-clay. Also I find mine is more sure as a protection against fire, as heat will not crack or flake it when put on wood or metal. I also disclaim the use of common clay pulverized, as patented July 17, 1866, as my fire-clay rock is much'harder, and beings, fire-clay has the quality of resisting a. great amount of heat. i

What I claim as my invention, and desire to secure by Letters Patent, is- The simple compound of ground fire-clay rock and coal tar, as specified.

} v, JOHN P. GOWING.

I W1tnesses:

PHILo Cowme,

C. J. THOMAS. 

